CN210045931U - Closed die upsetting-extruding composite forming die - Google Patents
Closed die upsetting-extruding composite forming die Download PDFInfo
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- CN210045931U CN210045931U CN201920664384.5U CN201920664384U CN210045931U CN 210045931 U CN210045931 U CN 210045931U CN 201920664384 U CN201920664384 U CN 201920664384U CN 210045931 U CN210045931 U CN 210045931U
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Abstract
The utility model discloses a closed die upsetting-extruding composite forming die, wherein one end of an upper die is provided with a first discharging hole for an extrusion rod to insert and to be matched with one part of a blank upsetting-extruding part to be upset, the other end of the upper die is provided with a first forming cavity for upsetting-extruding forming, and the first forming cavity is communicated with the first discharging hole; the other end of the lower die is provided with a cavity, the cavity comprises a first accommodating cavity and a lower half forming cavity, the first accommodating cavity is used for accommodating the other end of the upper die, the lower half forming cavity corresponds to the upper half forming cavity, and the lower die is also provided with a second accommodating cavity used for accommodating a blank non-upsetting-extruding part; the other end of the extrusion rod penetrates through the second lifting assembly and then extends into a first discharging hole of the upper die; one end of the hydraulic assembly is connected with the second lifting assembly, after the other end of the upper die is matched in the first accommodating cavity, the pressure applied to one end of the upper die by the other end of the hydraulic assembly is larger than or equal to the reverse extrusion force formed by the blank on the upper die during upsetting extrusion. The utility model has the advantages of avoid going up the mould and receive the backward extrusion force of blank and the displacement.
Description
Technical Field
The utility model relates to a metal forging mould technical field, concretely relates to closed mould is beaten crowded compound forming die of jumping up.
Background
The large height-diameter ratio bar stock is used for upsetting and extruding blanks, and is mainly used for prefabricated blanks of half shaft parts. Generally, a top upsetting process is adopted for upsetting and extruding a blank with a large height-diameter ratio, the height-diameter ratio is reduced by gradually increasing the angle of an upper die conical die cylinder, the effect of upsetting, extruding and gathering is achieved, generally, the whole forming process is not less than 3 steps, the blank is cooled due to long forming time in the middle, the blank needs to be returned to a furnace for heating, energy is consumed, oxide skin is generated on the blank, the product quality is influenced, the economic benefit is low, and if the angle of the conical die in each step is not well treated, the stroke of the material is easily folded in the forming process, and the final product is scrapped.
In the existing upsetting-extruding blank making process, an upper die and a lower die are firstly closed before upsetting-extruding, so that the upsetting-extruding upper die cannot displace relative to the lower die, after the upper die and the lower die are closed, a spring is arranged on an upper frame, the upper frame drives a hydraulic device and a punch to integrally move downwards along the axial direction of the upper die and the lower die, one end of the spring abuts against the upper die, and along with the continuous downward movement of the upper frame, a compression acting force is applied to the spring, so that the spring is tightly pressed on the upper die.
In this way, the upper and lower dies are formed into the closed die by the force of the spring due to the upper frame, however, in the actual upsetting-extruding process, the acting force of large-scale hydraulic equipment on the blank reaches hundreds of tons or even thousands of tons, even if the large-scale hydraulic equipment is small-scale hydraulic equipment, the acting force generated to the blank during upsetting extrusion is several tons to dozens of tons, therefore, the blank is subjected to the upsetting extrusion acting force generated by hydraulic equipment, the blank deforms, so that the upper die is subjected to the reverse extrusion acting force, obviously, the spring cannot bear the reverse acting force of dozens of tons to hundreds of tons or even thousands of tons, so that a gap is generated between the upper die and the lower die, the closing failure of the upper die and the lower die is caused, and a part of upsetting-extruding deformation of the blank enters the gap between the upper die and the lower die, so that the blank generates flash during upsetting-extruding and even is scrapped in severe cases.
SUMMERY OF THE UTILITY MODEL
The utility model provides an avoid going up mould and receive the reverse extrusion force of blank and the crowded compound forming die of closed mould upset at upset crowded in-process.
The technical scheme for solving the technical problems is as follows:
closed mould is upset and is crowded compound forming die includes:
a first lifting assembly;
one end of the extrusion rod is connected with the first lifting component;
the device comprises an upper die, a lower die and a lower die, wherein one end of the upper die is provided with a first discharge hole for an extrusion rod to insert and matched with one part of an upsetting part of a blank to be upset and extruded, the other end of the upper die is provided with an upper half forming cavity for upset and extrusion forming, and the upper half forming cavity is communicated with the first discharge hole;
a lower template component;
the lower die is fixed with the lower die plate assembly at one end, a cavity is arranged at the other end of the lower die and comprises a first accommodating cavity and a lower half-forming cavity, the first accommodating cavity is used for accommodating the other end of the upper die, the lower half-forming cavity corresponds to the upper half-forming cavity, a second accommodating cavity is further arranged on the lower die and is used for accommodating a blank non-upsetting-extruding part, and the second accommodating cavity is communicated with the lower half-forming cavity;
the other end of the extrusion rod penetrates through the second lifting assembly and then extends into the first discharging hole of the upper die;
and one end of the hydraulic assembly is connected with the second lifting assembly, and after the other end of the upper die is matched in the first accommodating cavity, the pressure applied to one end of the upper die by the other end of the hydraulic assembly is greater than or equal to the reverse extrusion force formed by the blank on the upper die during upsetting and extrusion.
The utility model has the advantages that: the acting force generated by the hydraulic assembly during working is used for resisting the reverse extrusion force formed by the blank to the upper die during upsetting extrusion, and the acting force generated by the hydraulic assembly is larger than the reverse extrusion force, so that the die assembly of the upper die and the lower die can be stable through the hydraulic assembly, the upper die cannot move upwards because the blank receives the reverse extrusion acting force generated during upsetting extrusion, and a gap between the upper die and the lower die is avoided, thereby fundamentally avoiding the condition that a part of upsetting extrusion deformation of the blank in the prior art enters the gap between the upper die and the lower die.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the roll forming process for the automotive axle shaft of the present invention;
FIG. 2 is a schematic view of the upper die and the lower die of FIG. 1 engaged together;
fig. 3 is a schematic view of the ejector pin of the present invention;
fig. 4 is a schematic structural view of a second embodiment of the closed die upsetting-extruding composite forming die of the present invention;
FIG. 5 is a schematic cross-sectional view of the lower mold shown in FIG. 4;
FIG. 6 is a schematic illustration of the assembly of the second lift assembly and the hydraulic assembly shown in FIG. 4;
FIG. 7 is a schematic view of the first mount shown in FIG. 4;
FIG. 8 is a schematic view of the hollow axle body of FIG. 4;
fig. 9 is a schematic view of a blank according to the present invention;
FIG. 10 is a schematic view of the extrusion ram beginning to upset the billet in accordance with the present invention;
fig. 11 is a schematic diagram of the semi-finished blank obtained after upsetting and extruding the blank by the middle extruding rod of the present invention;
fig. 12 is a schematic view of a second upper die of the present invention when upsetting and extruding a semi-finished blank;
fig. 13 is a schematic view of the second upper die of the present invention obtaining a semi-finished product blank after upsetting and extruding the semi-finished product blank;
fig. 14 is a schematic view of a finished blank of the present invention;
fig. 15 is a schematic view of a first upper die and a first lower die for rolling and molding a finished blank according to the present invention;
FIG. 16 is a schematic view of a first upper die and a first lower die rolling a finished blank into an automotive axle shaft;
a is a blank, B is a semi-finished blank, C is a finished blank, and D is an automobile half shaft;
the structure comprises an upper template, an extrusion rod, an upper die, a first discharging hole, a first upper half forming cavity, a lower die, a first bearing cavity, a first lower half forming cavity, a second bearing cavity, a second lower half forming cavity, a receding groove 4d, clamping grooves 4e, a mandril, a bearing part 5a, a radial bulge part 5b, a connecting part 5c, a lower template 6, a through hole 6a, a fixing plate 7, a first mounting seat 8, a first through hole 8a, a lifting driver 9, a hydraulic assembly 10, a transmission mechanism 11, a support 12, a first driving part 13, a second driving part 14, a supporting part 15, a hollow shaft body 16, a first radial flange 17, a second radial flange 18, a first plane bearing 19, a second plane bearing 20 and a third plane bearing 21.
30 is a second upper die;
40 is a first lower die, 41 is a first lower cavity, 42 is a first upper die, 43 is a first upper cavity, and 44 is an abdicating cavity.
Detailed Description
As shown in fig. 1, the utility model discloses a closed mould is upset and is crowded compound forming die, including first lifting unit, stripper bar, last mould, lower bolster subassembly, lower mould, second lifting unit, hydraulic assembly, the following is to every part and the relation between them carry out the detailed description:
as shown in fig. 1 and 2, the first lifting assembly includes an upper mold plate 1 and a lifting driving device (not shown in the figure) for driving the upper mold plate 1 to lift, the first lifting assembly can perform horizontal movement and lifting movement, the lifting driving device is installed on a mounting plate of the horizontal movement, the mounting plate is in sliding fit with the machine frame, the mounting plate is connected with the horizontal driving device, the horizontal driving device drives the mounting plate to perform horizontal movement, so that the long lifting assembly performs horizontal movement, and when the horizontal movement reaches a required position, the lifting driving device drives the upper mold plate 1 to perform lifting movement.
As shown in fig. 1 and 2, one end of the extrusion rod 2 is connected to the first lifting assembly, one end of the extrusion plate 2 is fixedly connected to the upper die plate 1 in the first lifting assembly, and the other end of the extrusion rod 2 is driven by the lifting driving device to extend into the upper die so as to upset and extrude the blank a fitted in the upper die 3 and the lower die.
As shown in fig. 1 and 2, one end of the upper die 3 is provided with a first discharging hole 3a for inserting the extrusion rod 2 and matching with a part of the upsetting portion of the blank a to be upset and extruded, the other end of the upper die 3 is provided with an upper half forming cavity 3b for upsetting and extruding, the upper half forming cavity 3b is communicated with the first discharging hole 3a, a cavity formed by the first discharging hole 3a and the upper half forming cavity 3b penetrates through the upper die 3 along the axial direction of the upper die 3, in this embodiment, the cross section of the upper half forming cavity 3b is gradually enlarged from top to bottom, and the upper half forming cavity 3b is tapered.
As shown in fig. 1 and 2, one end of the lower die 4 is fixed to the lower die plate assembly, the other end of the lower die 4 is provided with a cavity, the cavity comprises a first accommodating cavity 4a for accommodating the other end of the upper die 3 and a lower half-forming cavity 4b, the lower half-forming cavity 4b corresponds to the upper half-forming cavity 3b, when the other end of the upper die 3 enters the first accommodating cavity 4a and the lower half-forming cavity 4b and the upper half-forming cavity 3b are closed to form a complete upsetting-forming cavity, the ratio of the height of the upsetting-forming cavity to the height of the blank a is less than 2.5, preferably, the ratio of the height of the upsetting-forming cavity to the height of the blank a is 2.3, thus, the upsetting-forming process is always in a stable and controllable state, the upsetting step of upsetting can be reduced to realize upsetting-forming of blanks with the height-diameter ratio of 3 to 12, and defects such as folding and eccentricity can not occur in the forming.
As shown in fig. 1 and 2, the lower die 4 is further provided with a second accommodating cavity 4c for accommodating a non-upset part of the blank a, the second accommodating cavity 4c is communicated with the lower half-forming cavity 4b, and a cavity formed by the first accommodating cavity 4a, the lower half-forming cavity 4b and the second accommodating cavity 4c penetrates through the lower die 4 along the axial direction of the lower die 4. The purpose of providing the second receiving chamber 4c on the lower die 4 is to mount a ram 5 on the lower die 4 so that the billet a is ejected by the ram 5 after upsetting and extrusion.
The lower template subassembly includes lower bolster 6, fixed plate 7, and fixed plate 7 is fixed on lower bolster 6, and the other end of lower mould 4 then is fixed on fixed plate 7, is equipped with through-hole 6a on the lower bolster 6, and the axial of this through-hole 6a and the axial that the second held chamber 4c lie in same straight line to be convenient for ejecting drive arrangement (not shown in the figure) and ejector pin 5 to be connected, so that make ejector pin 5 carry out work.
As shown in fig. 1 and 3, in the present embodiment, the push rod 5 preferably adopts a structural form: the blank A is not upset and extruded into the second containing cavity 4c, at the moment, the bearing part 5a bears the non-upset part of the blank A, the radial bulge part 5b protrudes from the peripheral surface of the bearing part 5a, therefore, the outer diameter of the radial bulge part 5b is larger than that of the bearing part 5a, and the radial bulge part 5b abuts against the lower template 6, so that the parts above the radial bulge part 5b are supported. The diameter of the connecting part 5c is smaller than the aperture of the through hole 6a, and the connecting part 5c can extend into or pass through the through hole 6a to be connected with the ejection driving device.
As shown in fig. 1 and 2, the other end of the extrusion rod 2 passes through the second lifting assembly and then extends into the first discharging hole 3a of the upper die 3, in this embodiment, the second lifting assembly preferably has a structure including a first mounting seat 8 and a lifting driver 9, the lifting driver 9 drives the first mounting seat 8 to lift the device, the first mounting seat 8 is provided with a first through hole 8a, and the first through hole 8a allows the other end of the extrusion rod 2 to pass through. The lifting drive 9 is a linear drive, preferably a hydraulic cylinder.
As shown in fig. 1 and 2, after one end of the hydraulic assembly 10 is connected to the second lifting assembly and the other end of the upper die 3 is fitted in the first accommodating chamber 4a, the pressure applied to one end of the upper die 3 by the other end of the hydraulic assembly 10 is greater than or equal to the backward extrusion force of the billet a on the upper die 3 during upsetting. One end of the hydraulic component 10 is connected to the first mounting seat 8, and the hydraulic component is preferentially connected with one end of the upper die 3, so that the upper die, the hydraulic component 10 and the second lifting component form a whole, and when the second lifting component is lifted, the upper die 3 is lifted along with the second lifting component. The acting force generated by the hydraulic component 10 during working is used for resisting the reverse extrusion force formed by the blank A to the upper die 3 during upsetting extrusion, and the acting force generated by the hydraulic component 10 is larger than the reverse extrusion force, so that the die assembly of the upper die 3 and the lower die 4 can be stable through the hydraulic component 10, the upper die 3 cannot move upwards because the blank A is subjected to the reverse extrusion acting force generated during upsetting extrusion, a gap is prevented from being generated between the upper die 3 and the lower die 4, and the condition that part of upsetting extrusion deformation of the blank A enters the gap between the upper die 3 and the lower die 4 in the prior art is fundamentally avoided.
As shown in fig. 4 to 8, the present embodiment is different from the first embodiment as follows:
be equipped with on the global of lower mould 4 and link up to the first cell body that holds in the chamber 4a, the cell body includes along 4 axial extension's of lower mould groove 4d and the draw-in groove 4e that extends along lower mould circumference. Be equipped with bellying (not shown) on the outer peripheral face of last mould 3, go up the decline of mould 3 and cooperate when in the first chamber 4a that holds, the bellying passes through the groove of stepping down 4d, rotatory last mould 3 makes the bellying with draw-in groove 4e forms clearance fit. When the billet A forms reverse extrusion force on the upper die 3 during upsetting extrusion, the upper die 3 and the lower die 4 form a whole due to the clearance fit of the convex part on the upper die 3 and the clamping groove 4e, and the counter action formed by the matching of the convex part and the clamping groove 4e on the reverse extrusion acting force is avoided, so that the upper die 3 is prevented from moving upwards. This further avoids the formation of said gap between the upper die 3 and the lower die 4.
As shown in fig. 4 to 5, since the upper mold 3 needs to be rotated to engage the protrusion with the slot 4e, in this embodiment, a driver is provided, the driver engages with the upper mold, the driver drives the upper mold 3 to rotate, and the driver drives the upper mold 3 to rotate to engage the protrusion with the slot 4 e.
As shown in fig. 4, the driver includes a transmission mechanism 11 engaged with the upper mold 3, a bracket 12, and a first driving member 13, the transmission mechanism 13 is rotatably installed at one end of the bracket 12, the other end of the bracket 12 is disposed on the lower mold plate assembly, the first driving member 13 is installed on the bracket 12, and an output end of the first driving member 13 is connected with the transmission mechanism 11.
As shown in fig. 4, the transmission mechanism 11 may be a friction roller or a gear, and the transmission mechanism 11 is preferably a friction roller. The first drive member 13 may be an electric motor or a hydraulic motor, and the first drive member 13 is preferably an electric motor. After the circumferential surface of the friction roller is matched with the circumferential surface of the upper die 3, the motor drives the friction roller to rotate, the friction roller enables the upper die 3 to rotate through friction acting force, and therefore the protruding portion on the upper die 3 is clamped into the clamping groove 4 e. The protruding part is released from being clamped into the clamping groove 4e, and the friction roller is driven to rotate reversely only by the reverse rotation of the motor.
As shown in fig. 4, the actuator further includes a second driving member 14, the second driving member 14 is a linear driving member, the second driving member 14 may be a hydraulic cylinder, an air cylinder, a motor connected with a screw mechanism, and the like, and in this embodiment, a hydraulic cylinder is preferably used. The other end of the bracket 12 is in sliding fit with the lower template assembly, the second driving part 14 is connected with the bracket 12, and the second driving part 14 drives the bracket 12 to move linearly so as to enable the transmission mechanism 11 to be matched with or separated from the upper die 3.
As shown in fig. 4, the section of the bracket 12 is L-shaped, the driver further includes a supporting member 15, one end of the supporting member 15 is fixedly connected with the lower template assembly, the other end of the supporting member 15 is in sliding fit with the bracket 12, the supporting member 15 supports the bracket 12, and the bracket 12 is movable relative to the supporting member 15.
As shown in fig. 4, since the actuator drives the upper die 3 to rotate, and the upper die 3 is connected to the hydraulic assembly 10, the hydraulic assembly 10 needs to be assembled differently from the above embodiment, specifically as follows:
as shown in fig. 4 to 8, the second lifting assembly includes a first mounting seat 8, a first hollow shaft, and a supporting assembly, a first through hole 8a is provided on the first mounting seat 8, the first supporting assembly is mounted on the first mounting seat 8, one end of the first hollow shaft passes through the first through hole 8a on the first mounting seat 8, and the first hollow shaft is matched with the supporting assembly, and the hydraulic assembly is connected with the first hollow shaft.
As shown in fig. 4 to 8, the first hollow shaft includes: the hollow shaft comprises a hollow shaft body 16, a first radial flange 17 and a second radial flange 18, wherein the first radial flange 17 is arranged at one end of the hollow shaft body 16, the hydraulic component 10 is connected with the first radial flange 17, the second radial flange 18 limits the axial displacement of the hollow shaft body, the second radial flange 18 is arranged at the other end of the hollow shaft body 16, and the second radial flange 18 abuts against one end of the first mounting seat 8 or a supporting component mounted on the first mounting seat 8. The first radial flange 17 is integrally formed with one end of the hollow shaft body 16, and the second radial flange 18 is fixed to the other end of the hollow shaft body 16 by welding, or the first radial flange 17 is fixed to one end of the hollow shaft body 16 by welding, and the second radial flange 18 is integrally formed with the other end of the hollow shaft body 16.
As shown in fig. 4 to 8, the first hollow shaft and the first bearing assembly and the first mounting seat 8 may be structured in the following manner: the first bearing assembly comprises a first plane bearing 19, the first through hole 8a in the first mounting seat 8 is a stepped hole, the first plane bearing 19 is mounted in a large-diameter hole of the stepped hole, and the second radial flange 18 is connected with the first plane bearing 19 to form abutting.
As shown in fig. 4 to 8, the first hollow shaft and the first bearing assembly and the first mounting seat 8 may be structured in the following manner: the first bearing assembly comprises a second plane bearing 20 and a third bearing 21, the first through hole 8a on the first mounting seat 8 is a step hole, the second plane bearing 20 is mounted in a large-diameter hole of the step hole, the second plane bearing 20 is connected with the second radial flange 18 to form a support, the third bearing 21 is mounted in the small-diameter hole of the step hole, and the third bearing is matched with the hollow shaft body 16. While the first radial flange 17 abuts against the first mounting seat 8.
As shown in fig. 4 to 8, the first hollow shaft and the first bearing assembly and the first mounting seat 8 may be structured in the following manner: the first bearing assembly comprises a first plane bearing 19, a second plane bearing 20 and a third bearing 21, the first through hole 8a on the first mounting seat 8 is a stepped hole with a large diameter at two ends and a small diameter in the middle, the first plane bearing 19 and the second plane bearing 20 are respectively installed in the large diameter holes of the stepped hole, and the third bearing 21 is installed in the small diameter hole of the stepped hole. The second radial flange 18 is connected with the first plane bearing 19 to form a butting part, and the second bearing 20 is connected with the first radial flange 17 to form a butting part.
The rolling forming process of the automobile half shaft is explained by using the closed die upsetting-extruding composite forming die shown in the figure 1, and comprises the following specific process steps:
blanking: as shown in fig. 9, firstly, a blank with an aspect ratio of 3 to 12 is prepared, and in specific implementation, based on the diameter of the rod part of the finished blank and the weight of the finished blank, the length required by blanking is calculated for blanking, so as to obtain a blank a;
local heating: heating the upsetting-extruding deformation section of the blank A by using an intermediate frequency furnace, not heating the non-upsetting-extruding section of the blank A by using the intermediate frequency furnace, and controlling the heating temperature at 1100-1200 ℃;
upsetting-extruding composite forming by a closed die: as shown in fig. 10, after the blank a is placed into the closed die upsetting-extruding composite forming, the closed die upsetting-extruding composite forming die is closed to form a closed cavity, the closed die upsetting-extruding composite forming die works to upset and extrude the blank a, as shown in fig. 11 of fig. 1, the hydraulic assembly drives the first mounting seat 8 to descend to enable the lifting driver 9 and the upper die 3 connected with the lifting driver 9 to descend, and after the upper die 3 and the lower die 4 are closed, the upper die 3 and the lower die 4 are kept to abut against each other through the acting force of the lifting driver 9, so that a gap is prevented from being generated between the upper die 3 and the lower die due to the reaction force of deformation of the blank a during upsetting. After the upper die 3 and the lower die 4 are kept abutting, the upper die plate 1 descends to enable the extrusion rod 2 to form upsetting extrusion effect on the blank A. As shown in fig. 12, the blank a is upset, extruded and compounded into a semi-finished blank B under the action of a closed die upset, extruded and compounded forming die; the height-diameter ratio of the blank A is 3 to 12; after the upper die and the lower die are closed, the height-diameter ratio of the upsetting-extruding deformation section is controlled to be not more than 2.5 under the constraint of a die cavity.
Upsetting and forming: as shown in fig. 13, a part of the closed die upsetting-extruding composite forming die is transferred, i.e. the upper die plate 1, the extrusion rod 2, the upper die 3, etc. are removed, while the lower die 4 and the semi-finished blank B remain in the cavity of the lower die 4, and the semi-finished blank B obtained in step 3 is upset-extruded by using the second upper die 30 to obtain a finished blank C (as shown in fig. 14); and in the upsetting and extruding process of the semi-finished blank B, the height-diameter ratio of a deformation area of the semi-finished blank B is not more than 2.5.
Rolling and forming: as shown in fig. 15 and 16, the finished blank B is placed in the first lower cavity 41 of the first lower die 40, the first lower die 40 rotates around its axis and drives the finished blank B to rotate together, the rotation speed of the first lower die 40 is 20-70r/min, after the rotation speed is stable (for example, the rotation speed set by the first lower die is 50r/min, but cannot reach the speed when starting, the speed can reach 50r/min after starting for a period of time, that is, the stable rotation speed), the first upper die 42 presses the finished blank B after the first upper die 42 downwardly pushes the first upper cavity 43 of the first upper die 42 against a part of the axial end surface of the finished blank B, and the speed of pressing the finished blank by the first upper die is 1-10 mm/s. After the first upper cavity 43 abuts against a part of the axial end face of the finished blank B, the first upper die 42 passively rotates around the axis of the first upper die 42, and the finished blank is rolled by the first upper die 42, so that the finished blank is filled in the cavities of the first upper die and the first lower die to obtain the automobile half shaft D. And finally, shaping the obtained axial end face of the automobile half shaft D. The axial direction of the first upper die 42 forms an included angle of 4 ° to 8 ° with the axial direction of the finished blank C. The first upper die 42 is provided with a yielding cavity 44 for forming yielding when the first upper die cavity 43 presses the finished blank C.
Claims (10)
1. Closed mould is upset and is crowded compound forming die, its characterized in that includes:
a first lifting assembly;
one end of the extrusion rod is connected with the first lifting component;
the device comprises an upper die, a lower die and a lower die, wherein one end of the upper die is provided with a first discharge hole for an extrusion rod to insert and matched with one part of an upsetting part of a blank to be upset and extruded, the other end of the upper die is provided with an upper half forming cavity for upset and extrusion forming, and the upper half forming cavity is communicated with the first discharge hole;
a lower template component;
the lower die is fixed with the lower die plate assembly at one end, a cavity is arranged at the other end of the lower die and comprises a first accommodating cavity and a lower half-forming cavity, the first accommodating cavity is used for accommodating the other end of the upper die, the lower half-forming cavity corresponds to the upper half-forming cavity, a second accommodating cavity is further arranged on the lower die and is used for accommodating a blank non-upsetting-extruding part, and the second accommodating cavity is communicated with the lower half-forming cavity;
the other end of the extrusion rod penetrates through the second lifting assembly and then extends into the first discharging hole of the upper die;
and one end of the hydraulic assembly is connected with the second lifting assembly, and after the other end of the upper die is matched in the first accommodating cavity, the pressure applied to one end of the upper die by the other end of the hydraulic assembly is greater than or equal to the reverse extrusion force formed by the blank on the upper die during upsetting and extrusion.
2. The closed die upsetting-extruding composite forming die as claimed in claim 1, wherein a groove body penetrating into the first accommodating cavity is formed in the circumferential surface of the lower die, and the groove body comprises an abdicating groove extending along the axial direction of the lower die and a clamping groove extending along the circumferential direction of the lower die;
the outer peripheral face of the upper die is provided with a protruding portion, one end of the upper die descends and is matched with the first accommodating cavity, the protruding portion passes through the abdicating groove, and the upper die is rotated to enable the protruding portion to be in clearance fit with the clamping groove.
3. The closed die upsetting-extruding composite forming die as recited in claim 2, wherein the hydraulic assembly is connected with the upper die;
the device further comprises a driver which drives the upper die to rotate and enables the protruding portion to be clamped into the clamping groove, the driver is matched with the upper die, and the driver drives the upper die to rotate.
4. The closed die upsetting-extruding composite forming die as recited in any one of claims 1 to 3, wherein the second lifting assembly comprises a first mounting seat, a first hollow shaft and a supporting assembly, the first mounting seat is provided with a first through hole, the first supporting assembly is mounted on the first mounting seat, one end of the first hollow shaft passes through the first through hole on the first mounting seat, the first hollow shaft is matched through the supporting assembly, and the hydraulic assembly is connected with the first hollow shaft.
5. The closed die upsetting and extruding composite forming die as recited in claim 4, wherein the first hollow shaft comprises:
a hollow shaft body;
the hydraulic component is connected with the first radial flange;
and the second radial flange is arranged at the other end of the hollow shaft body and forms an abutting joint with one end of the first mounting seat or a supporting component arranged on the first mounting seat.
6. The closed die upsetting-extruding composite forming die as claimed in claim 5, wherein the first bearing assembly comprises a first plane bearing, the first through hole of the first mounting seat is a stepped hole, the first plane bearing is installed in a large-diameter hole of the stepped hole, and the second radial flange is connected with the first plane bearing to form an abutment.
7. The closed die upsetting-extruding composite forming die as claimed in claim 4, wherein the first bearing assembly comprises a second planar bearing and a third bearing, the first through hole of the first mounting seat is a stepped hole, the second planar bearing is installed in a large-diameter hole of the stepped hole, the second bearing is connected with one end of the first hollow shaft, and the third bearing is installed in a small-diameter hole of the stepped hole.
8. The closed die upsetting and extruding composite forming die as recited in claim 3, wherein the driver comprises:
a transmission mechanism matched with the upper die;
the transmission mechanism is rotatably arranged at one end of the bracket, and the other end of the bracket is arranged on the lower template assembly;
the first driving part is arranged on the bracket, and the output end of the first driving part is connected with the transmission mechanism.
9. The closed die upset extrusion composite forming die of claim 8, wherein the driver further comprises:
the other end of the support is in sliding fit with the lower template assembly, the second driving part is connected with the support, and the second driving part drives the support to move linearly so that the transmission mechanism is matched with or separated from the upper die.
10. The closed die upsetting-extruding composite forming die as claimed in claim 8, wherein the support has an L-shaped cross section, and further comprises a supporting member, one end of the supporting member is fixedly connected with the lower template assembly, and the other end of the supporting member is in sliding fit with the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920664384.5U CN210045931U (en) | 2019-05-10 | 2019-05-10 | Closed die upsetting-extruding composite forming die |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920664384.5U CN210045931U (en) | 2019-05-10 | 2019-05-10 | Closed die upsetting-extruding composite forming die |
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| CN210045931U true CN210045931U (en) | 2020-02-11 |
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| CN201920664384.5U Active CN210045931U (en) | 2019-05-10 | 2019-05-10 | Closed die upsetting-extruding composite forming die |
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| CN110052566A (en) * | 2019-05-10 | 2019-07-26 | 常州和仕达机械装备制造有限公司 | Closed mould upsetting squeeze composite molding die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110052566A (en) * | 2019-05-10 | 2019-07-26 | 常州和仕达机械装备制造有限公司 | Closed mould upsetting squeeze composite molding die |
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